Hiztohixo nakayama and keijibo adachi



IVI. NAKAYAMA AND K. ADACHI.

UTILIZATION OF WASTES 0R SCRAPS 0F LEATHER. APPLICATION FILED OCT. 1. 1920.

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MIZUHIKO NAKAYAMA AND KEIlJ'IRO A'DACHI, OF TOKYO, JAPAN.

UTILIZATION OF wASTES 0R SCEAPS OE LEATHER.

Specification of Letters Patent.

Patented Jan. 3, 1922.

Application filed October 1, 1920. Serial No. 413,952.

To all whom it may concern:

Be it known that we, MIZUHIKO NAKA- YAMA and KnIJIRo ADAoHI, subjects, of Emeror of Japan, residing at, respectively, 0. 892, Tozuka-machi, Toyotama-gun, Tokyo-fu, Japan, and No. 2, Nlshikuromoncho, Shitaya-ku, Tokyo, Japan, have Invented certain new and useful Improvements in Utilization of Wastes or- Scraps of Leather, of which the following is a specification.

This invention relates to a utilization of wastes or scraps of leather produced in manufacturing leather goods, wherein the waste or scraps which are out clean 1n regular shape and size according to occasion, are sewed together longitudinally so as to form belt-shaped strips, in some cases putt-mg ntermediate pieces which are either of 1nferior leather pieces or of other suitable material, between ordinary leather pleces, making them a little narrower than ordinary ones lengthwise, and interweave these belt-shaped strips together, arranging them in such a manner that the seams or intermediate pieces on each strip may be concealed under the ordinary perfect leather pieces of the other strips which run crosswise with it, thus the present invention has for its object to manufacture the leather goods such as bags, satchels, covers of chairs, footwears, etc., of these waste materials of which exterior appearances are fine enough as if they were made of complete material;

In accompanying drawings Fig. 1 is a plan view of a belt-shaped strip made of a number of leather pieces sewn together.

Fig. 2 is a plan view on a belt-shaped strip made by putting intermediate pieces between each ordinary leather piece.

Fig. 3 is a plan view of a belt-shaped strip made by sticking or plasting leather Fig. 4 is a plan view showing a number of belt-shaped strips which are already. shown in Figs. 1, 2 and 3 interwoven into a broad piece of leather material.

As clearly understood in the drawings the process according to this invention is as fo1lows:-

First the wastes or scraps of leather of similar kinds are cut into the most advantageous shape to facilitate making long strips of them, for instance square or rectangular. These small pieces (1) which are preferably uniform in shape and size are sewed together longitudinally or pasted on some long strips of cloth (5) so that they form belt-shaped leather strlps, sometimes putting between these pieces intermediate pieces which may be of inferior leather or of any other suitable material (3) and narrower than the ordinary leather pieces lengthwise, so as to be concealed under the latter when the longitudinal strips are woven together. Then knit or interweave these belt-shaped strips, using some of them as warps and others as woofs, trying at the same time to conceal the scams or intermediate pieces under the ordinary leather pieces of perfect skin, in some cases replacing either one of warp or woof with one which is made of some other material, thus making the interwoven surface .present a fine appearance as if it were made of a number of perfect strips of leather. Next give these woven leather materials desirable sizes, by pressing same with suflicient pressure to elongate them so that the gaps between the leather strips can be filled, and finish them painting with a solution of celluloid orof other suitable material. In case of using intermediate pieces, they must be made a little smaller lengthwise than the ordinary leather pieces under which they are concealed, leaving a margin (4) I for seams so that they are not exposed in the least.

Over the thread, with which the leather pieces are sewn together, some kind of paste must be spread so that the unfastening or untying of the thread is prevented.

Having now described our invention and 1n what manner lt'lS performed, we hereby declare what we claim is 1. A process for utilizing waste leather which consists in reducing the same to pieces of substantially equal size and shape, connecting said pieces end to end to form a. plurality of strips, interweaving the said strips one with the other to form a leather fabric, and arranging the points of connection of the pieces of each strip beneath pieces of the other'strips to conceal the points of connection. j

2. A process for. utilizing waste leather which consists in reducing superior portions of the same to pieces of substantially equal size and shape, reducing inferior ortions of the same to smaller pieces 0 substan tially the same size and shape, connecting said pieces end to end with an inferior iece between each two superior pieces and orming a plurality-of strips, interweaving said strips one with the other to form a leather fabric,' and arranging the inferior pieces and the oints of connection of each strip be i neat superiorpiec es of the other strips to conceal the inferior pleces and the points of V 7 connection.

3. A leather fabric composed of a series of strips interwoven with each other, each stri consisting" of a series of pieces of 10 leat er arranged end to end and connected together, and the points of connection of the pieces of each strip being concealed beneath the pieces of the other strips.

In testimony whereof we affix our signa- 15 tures.

MIZUHIKO NAKAYAMA. KEIJIRO ADAGHI. 

